PureBasic

Fetch ISBN XML from isbndb.com and Parse

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Demonstrates sending a query to isbndb.com and parsing the XML response. PureBasic

IncludeFile "CkXml.pb"
IncludeFile "CkHttp.pb"

Procedure ChilkatExample()

    success.i = 0

    ; This example assumes the Chilkat API to have been previously unlocked.
    ; See Global Unlock Sample for sample code.

    http.i = CkHttp::ckCreate()
    If http.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; The access_key in this URL is a valid access key, but limited to 100 queries per day.
    ; If the key does not work, it may be that others were testing and exhausted the limit.
    strXml.s = CkHttp::ckQuickGetStr(http,"http://isbndb.com/api/books.xml?access_key=OV8L2Y9I&results=details&index1=isbn&value1=0443074348")
    If CkHttp::ckLastMethodSuccess(http) <> 1
        Debug CkHttp::ckLastErrorText(http)
        CkHttp::ckDispose(http)
        ProcedureReturn
    EndIf

    xml.i = CkXml::ckCreate()
    If xml.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkXml::ckLoadXml(xml,strXml)

    ; The XML returned for this URL is the following:

    ; <?xml version="1.0" encoding="UTF-8" ?>

    ; <ISBNdb server_time="2007-10-25T14:07:25Z">
    ;     <BookList total_results="1" page_size="10" page_number="1" shown_results="1">
    ;         <BookData book_id="diagnostic_histopathology_of_tumors_2_volume_set_with_cd_rom" isbn="0443074348">
    ;             <Title>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs</Title>
    ;             <TitleLong>Diagnostic Histopathology of Tumors: 2-Volume Set with CD-ROMs (Diagnostic Histopathology of Tumors (Fletcher))</TitleLong>
    ;             <AuthorsText>Christopher D. M. Fletcher (Editor)</AuthorsText>
    ;             <PublisherText publisher_id="churchill_livingstone">Churchill Livingstone</PublisherText>
    ;             <Details dewey_decimal="616" physical_description_text="2166 pages" language="" edition_info="Hardcover; 2007-03-13" dewey_decimal_normalized="616" lcc_number="" change_time="2006-12-13T14:53:42Z" price_time="2007-10-25T01:12:13Z" />
    ;         </BookData>
    ;     </BookList>
    ; </ISBNdb>

    ; First, navigate to the BookData node:
    success = CkXml::ckFirstChild2(xml)
    success = CkXml::ckFirstChild2(xml)

    ; Show the Title and AuthorsText:
    Debug CkXml::ckGetChildContent(xml,"Title")
    Debug CkXml::ckGetChildContent(xml,"AuthorsText")

    ; Show the publisher_id attribute of the PublisherText node:
    xml2.i
    xml2 = CkXml::ckFindChild(xml,"PublisherText")
    Debug CkXml::ckGetAttrValue(xml2,"publisher_id")

    CkXml::ckDispose(xml2)

    ; Save the XML to a file:
    success = CkXml::ckSaveXml(xml,"book.xml")


    CkHttp::ckDispose(http)
    CkXml::ckDispose(xml)


    ProcedureReturn
EndProcedure